20909918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{13421}}^1$

素因数の和:13483

約数の個数: 16

約数和(自身を含む): 33823440

約数和(自身を除く): 12913522

約数列:

[1, 2, 19, 38, 41, 82, 779, 1558, 13421, 26842, 254999, 509998, 550261, 1100522, 10454959, 20909918]

約数ペア:

[(1, 20909918), (2, 10454959), (19, 1100522), (38, 550261), (41, 509998), (82, 254999), (779, 26842), (1558, 13421)]